You received a cp2000 letter. It is a desk audit. Most that I see from non-clients are wrong. Many are from stock or bond sales. Have pro look at it.
Be careful with dates, you may have to file tax court petition
I haven't done a tax return as a paid preparer for four years...don't miss it one iota.
LOL...I earned my own letter last year. In my haste, I didn't correct the entry for my son's SS #, and they caught it. I made the correction, sent them a revised return, and that was that.